Time changes once RT resumes normal operations

Hi I am having this below issue and my environment is RT4 and Redhat 5

when I do date at the command prompt I am getting the out put as Wed Nov 27 14:36:35 IST 2013

But when I look at the Apache log, stop and start Apache the the the is correct but after starting normal operations the RT goes back 5:30 hours back

[Wed Nov 27 14:36:38 2013] [notice] caught SIGTERM, shutting down
[Wed Nov 27 14:37:23 2013] [notice] Digest: generating secret for digest authentication …
[Wed Nov 27 14:37:23 2013] [notice] Digest: done
[Wed Nov 27 14:37:25 2013] [notice] Apache/2.2.17 (Unix) DAV/2 mod_ssl/2.2.17 OpenSSL/0.9.8e-fips-rhel5 mod_perl/2.0.5 Perl/v5.14.0 configured – r
esuming normal operations
[Wed Nov 27 09:07:25 2013] [warn]: The actual HTTP_HOST (203.143.24.116) does NOT match the configured WebDomain (192.168.11.39). Perhaps you shoul
d Set($WebDomain, ‘203.143.24.116’) in RT_SiteConfig.pm, otherwise your internal links may be broken. (/usr/local/rt-ora/sbin/…/lib/RT/Interface/W
eb.pm:1094)
[Wed Nov 27 09:07:25 2013] [warn]: The actual HTTP_HOST (203.143.24.116) does NOT match the configured WebDomain (192.168.11.39). Perhaps you shoul
d Set($WebDomain, ‘203.143.24.116’) in RT_SiteConfig.pm, otherwise your internal links may be broken. (/usr/local/rt-ora/sbin/…/lib/RT/Interface/W
eb.pm:1094)
[Wed Nov 27 09:07:25 2013] [warn]: The actual HTTP_HOST (203.143.24.116) does NOT match the configured WebDomain (192.168.11.39). Perhaps you shoul
d Set($WebDomain, ‘203.143.24.116’) in RT_SiteConfig.pm, otherwise your internal links may be broken. (/usr/local/rt-ora/sbin/…/lib/RT/Interface/W
eb.pm:1094)
[Wed Nov 27 09:07:25 2013] [warn]: The actual HTTP_HOST (203.143.24.116) does NOT match the configured WebDomain (192.168.11.39). Perhaps you shoul
d Set($WebDomain, ‘203.143.24.116’) in RT_SiteConfig.pm, otherwise your internal links may be broken. (/usr/local/rt-ora/sbin/…/lib/RT/Interface/W
eb.pm:1094)
[Wed Nov 27 09:07:38 2013] [warn]: The actual SERVER_PORT (80) does NOT match the configured WebPort (443). Perhaps you should Set($WebPort, 80) in
RT_SiteConfig.pm, otherwise your internal links may be broken. (/usr/local/rt-ora/sbin/…/lib/RT/Interface/Web.pm:1085)

I have set the RT time zone as below

Set($Timezone, ‘Asia/Colombo’);

Any idea what is going on

Thanks and Regards